Glass-working machine.



0. A. HANFORD.

GLASS WORKING MACHINE.

APPLICATION FILED NOV. 11.1914.

1,2543%. Patented Jan. 29, 1918.

7 SHEETS-SHEET I.

I/I/IT/V/ESSES:

O. A. HANFORD.

GLASS WORKING MACHINE.

APPLICATION FILED NOV- 11.1914.

1,54%,45 Patented Ja11.29,1918.

7 SHEETS-SHEET 2.

w 0'. HANFORD. GLASS WORKING MACHINE. APPLICATION ,mmnov. 11.1914.

Patented Jan. 29,-19l&

7 SHEETSSHEET 3.

\ MRI 4 m J n w %9 m W Z/ fl 6 J Z 9 2 m w 4 0 M6 y x 0 M, 1 r\% ..Y;| 6i 4 J 0 W h a o T'I a p M w w M 0. A.'HANFORD.

GLASS WORKING MACHINE.

APPLlCATlON FILED-NOV. 11.1914.

Patented Jan. 29, 1918.,

7 SHEETS-SHEET 4- 0; A. HANFORQ.

GLASS WORKING MACHINE.

APPLICATION FILED NOV. 11.1914.

Patented Jan. 29,1918.

' 7 suns-smear 5.

, I 4 Z mom 0. A. HANFORD.

GLASS WORKINGMACHINE.

APPLICATION FILED NOV. n, 1914.

T SHEE-TS-SHEET 6.

Wi ma mom APPLICAT 0. A.-HANFORD.

GLASS-WORKING MACHINE.

FILE!) nov. 11. 1914.

Patented J an. 29, 1918.

7 SHEETS-SHEET 7- gwvent '0 'To dZZ'wfiom'it may concern; v Be itknoWn'that-I, OR IN A; HANFonn, a citizen of the United StatesofvAmerlca,

can. a; nan-ronn,, or baaneniitnuf ina'snrjassienonaon urinnnacnmnsnasswonxrnafivmdnmn Application filed November 11; 1914. iserial711,582., a t E,

and a residentof-OrangeQNeW Jrsey,-have invented certain new and usefulImprovements inGl'ass-l/Vorking Machines, of 'WhlCh 1 the following isa: specification.

" working units'm'ova-ble ina closedpath findeother unit at a pluralityof definite wpoi-nts' in such path,- andinasmuchas one ofzthe arrestpositions vis that at Which the unlt I pendentlypf each other, withmeansqfor arresting each unit independently of every is loaded, itfurther-comprises means, which,-

' when a unit moves fromsuch position, an-

;other unit is automatically brought mto'such i position;

Italso comprises means, controlled by theelongation ofthe gather. forautomatically causing each umt to move forward fromanother of such'arrestrpositions, such lastnamed position being one tion of the gather;1 a

' construction, combination and arrangement of the several partsof'which it is composed,

as will be 'hereinafter' more ifully describedand claimed a A aReferring to-the accompanying drawings, int whlch 'correspondlngjparfisarepdesignated f 'by' corresponding marks of"reference Figure 1' isafront elevation of the ma chine constructed in accordance with" theinvention, lookingat the side of the'machinev a a a v a Eachof-.theglass-Workin'gunits-comprises a main carrier formed inpart ofacrectancorresponding-to"loadingposition.

" Fig; 3s a verticalacentral section on line "of Figs. 1: andrQQshowingthe travel? unit, Which'inthe preceding. figures is at loading position,as in elongation-position. 'Eig. 4 i'sa iragniental detailzof a unit'carrierframe v-- Fight 1s a "detail elevation oi tl'ie-tumt clutch; a

e Fig. 7'is a'detail' of onejof the rollerzbear lugs-forthe-unitcarrying-frames. 1

to permit elonga I ,16: forrollers 17,

HGOlilOIlS the-electrical (23, 11

Fig. 9-, is: a; fragmental sectional'view,

partly in plan,;taken through a unit'carrier.

Fig. 10 is aidevelopment of the blow-pipe -swinging, air and moldoperating cams,-

Fig ll vis a tdet ailof a main starting-lever, showi-ngqit; incooperative relation With the -corresponding main; startin switch.

jF-igJlQ is a detailpartlym; section'of telescopicbrace for the'marverer. Y Y

Fig; 13 ;is an enlarged ,dtai1,of a :unit framerand certa n ,parts carrledthcreont thermostatic controller.

Fig. 14;- is a"correspondingv viesv.-'.,of;'ithe' The machine iserected-upon; and around a central column 1,- WhlCh may be made in oneor'niorepieces, and which, by-preference,t is mounted -upon carl ying vWheels 2, the column being, by --preference, circular in horizontalcross section. Within 3 the base of the column is mounted a suitable,and by a preference an electric motor, 3, which-drives through thereducing-wormgears,a vertical shaft 5, the upper endtoffwhich has fastthereon apinion 6 meshing Witha gear 7 keyed on the hub 8 'ofa-mdrivingdrum 9, the hub 8, being sleeved .upon a circular v i 1 bearing on thevertical central column. y The It further involves improvements nthe'"glass-Working units "themselves, and in the shaft 5 has upon. its basea Wrist pin 10 driving; through the pitman; 11,: the piston.

head 12 ofan air pump 12% through which gular hollow ,frame15,-.whichhas upon its inner face at each of its "cornersa mounting I:Which, rollershean-upon the 1 beveled top and -;bottom= faces of thedrum-9 and onthe periphery ofithe drum ad acent v thereto according toWhether-such rollers-are" at the top or bottomoftheir e V t .7 I el-respective frames. Theldr-um thus serves as -Fig; '6, is afragmental'view' therethroughtt -The; drivingdrum .9 is connected to'thehub Sjby the Web 8 and the annula'r wall ofithe; drum extends bothiaboveand below such Web, being beveled *to. ta= sharp' edge upon its upperand lower'souter corners ,L :supportfor the carrying frames 15, whichlid antenna of each shaft 19 has keyed thereon an arm 21, pivoted to arod 22 working in suitable guides 23 in the carrying frame, and adaptedto be pulled by a spring 24 in such direction that the clutch .shoes arenormally loose upon the drum. The rod 22 is pulled in the reversedirection, and against the tension of the spring 24, by a solenoid 25 sothat when such solenoid is energized, the

shaft 19 is partly rotated and the clutch shoes drawn upon the edges ofthe drum, thereby locking the carrier frame to such drum and causing itto partake of the movement of the drum. 1

From the above it will be seen that whether or not a driving connectionwill exist between drum and each individual carrier, will depend uponwhether or not the solenoid on that particular carrier is energized.

The specific embodiment of the machine here shown is a machine havingthree definite positions which may be designated stoppage positions atwhich the travel of the carriers is automatically arrested, one of thesepositions being at loading, the second being for elongation and thethird being a storage position, but only two units are shown forsimplicity for the mechanical figures. Additional units, however, may beadded and by preference the number of units is greater than the numberof stoppage points, (as is shown in the diagram, Fig. 8), so that thereare intervals at which three of the units are at rest in the desiredpositions,

while other unit or units is or are in travel. This is done for thepurpose of providing a reserve unit or units to move into the loadiugposition immediately upon the preceding unit moving from such position.With such a machine, the wiring for the several solenoids is as followsMounted at the extreme top of the machine are two contact rings 26'and27, hav

ing a different potential created thereon. For this purpose, I wouldsuggest a difierence 015110 volts, although this may be varied. Brushes26 and 27 carried by a standard 28 moving with each frame, contact withthe rings 26 and 27, respectively, and leads 26 and 27 lead from suchbrushes the leads 26 and 27 for each frame being adapted to be connectedto each other through a main manually controlled starting switch 27, acoiiperating contact 26, both mounted on the frame and the solenoid 25operating the clutch of such frame. A contact arm 29 is connected withthe described circuit on each frame between the solenoid 25 and thecontact 26, and is normally drawn by means of a spring 29 toward acontact point 29", connected to such circu t between the switch lever27, and the brush 27 Symmetrically projecting from the enlarged head ofthe main column in respect to the several desired stopping points, and

insulated therefrom are studs 30, which,

when any unit has reached a desired sto ping point, is adapted-to bestruck by t e switch lever 29 and to lift the same from 0d itscoiiperating contact 29 The exact position of all the studs is such thatwhen any unit adjacent to such stud is at such stop ping position suchstud by contacting) with the automatic switch of such unit reaks contactbetween such switch and its contact point 29". Thus presuming a unit tobe in one of the stopping positions and presuming that the main switches27 are not in contact with their respective contact points 26, all ofthe solenoids 25 will be dencrgized, and all the units will be releasedfrom the drivin g drum. Any unit can now be put in motion by closing thecircuit at its main switch 27, thus completing the circuit through itsclutch solenoid and'engaging such unit with 'the drum by which it willbe moved. As

soon as such unit in this movement has moved suiiiciently in respect tothe corresponding stud 30, the automatic switch 29 on such unit willtrip over the. stud and be pulled back upon the contact 29", thuscompleting the circuit through the solenoid independently of the mainswitch, which may be then released. The clutch on such unit is now heldclosed on the driving drum by virtue of the circuit created throu h theautomatic switch 29 and contact point 29 until such unit is moved to thenext stopping position, when the stud 30 at such position will break thecircuit between the switch lever 29 and the contact point 29 and as themain switch has been released by this time and has been withdrawn fromthe contact point 26 by means of its spring 27 the circuit through theenergizing solenoid will be broken and the driving connection betweenthe drum and the unit will also be thus broken, permitting such unit tocome to rest at the next stopping point.

7 As it desired that the un1t in storage be automatically caused to moveto loading position by the movement of the preceding unit from suchposition, the contact studs 30 adiso meme

pletes the circuit through the solenoid of such unit to start itsmovement, but also completes a circuit through the solenoidfof the unitin loading position through the automatic switch 29 of such unit, thestud30 of the storageposition', :the'wire 30 the stud switcher of the.unit in-loading position,

{whereby the clutch solenoid of the 10 the storage position will alsobeener ized unit in and such unit will be caused to move from".

such position and, until its automatic switch 29 escapes the stud302 ofthe reserveposition and falls upon its :contact 29 ,'thus causing theunit in storage position to move forward I to loading positionfwhere itwill be arrested tween a ground connection 35 to the frame as beforedescribed; [In order to assure-that the unit at storage or reserve;position is moved sutliciently far for the tripping of its contact lever29 from. the storage stud, the

stud at storage position may be made shorter than the stud at loadingposition. 1 It has been stated that each unit will,

when its solenoid is. energized move forward to the next position; Ihave in' the accompanying diagrammatic drawing shown four' units,although there are but-three stop'po f sitions. The time of the machine,howeven is such that at the normal ratecf-working and with theelongating position-diametrically opposite the loading position thefourth unit will be movingfrom loading position are arrested. "{Anexample of such a struc- I ture is found'jin the application 'fR b toelt ngatingposition while the blowing unit is arrested and will not runup upon and collide 'with the unit in the elongating position, but willbe slightly in the rear thereof, and thus there will be a unit in or adjacent to elongating posit-ion substantially all the time. i I

Inasmuch as it'is sometimes desirable that the movement of each unitfrom the elongation positionbe automatic after-theproper period ofarrest there, I provide a control-' lable shunt around the mainsw1tch'=27. and

the automatic switch 29, such shunt comprising a switch arm 31 connected.to the wire 27", and the contact point 31 connected with the wire 26between the clutch solenoid and the contact point 2.6 The arm '31 formsthe armature of an electro-magnet 32,

the energizing wire of which is connected through an automatic contactmaker 34: be-

of the machine and a contact brush 28 travelingoii a contact ringQSlocated below the:

rings 26 and 27 and; similar thereto, such contact ring 28 beingconnectedto one side of the battery 3%,ftheoppos1te side of which [isalso grounded. i011 the frame. Ul'b" der these conditione when theautomatic switch '34 is closed the electromagnet32 will obvious'thatthis is; not essential to" that respect, itlis noted, that"=it isapplicable to [:will be made through the automatic switch '29 as beforedescribed. The closing of the switch 344s by' preference a function ofthe I 'behaviorof the glass and is caused thereby. 30 of theloadingposition, andthe'm'ain One typeof such contactmaker is described andclaimed in my prior Patent'1,066',270, Q dated July 1,1191%, and. Ivwill hereinafter describe how-such a contact maker may be 15' appliedto the machine here described.

'The'fmeehanism for working glass as shtnivn in the accompanyingdrawings is indlvidualized as to each unit, although it is I 80. broadream of myii'ivention which is dirooted to the movement ofthe units. Tolllustrate the scope of my invention-in this the movement of glassworking units,"which units each contain a vipartonly'cftheinstrufnentalities employed in lrworking the I glass, other parts beingassembled and mounted upon no i-travelingxpartsof the machine withwhichnon-travelihg instru to mentalities traveling instrumentalitie s' I5 I are brought nto cooperation by the move men ct-the units and aremaintained in ,1

such "cooperative; relation. when such units;

W: Canfield al a-au ust '20, 1914, Serial each unit its, carrying T thecomplete instru-i Lot) mentalities employed in the working of the glass.As shown these instrumentalities' are, 1 a 'marverenpa mold, and a blow'-p'ipeyand. means for "imparting to" these seyeral"instrumentalities thedesired I movements. "In- 1 o5 asmuch as the instrumentalitiesmounted;upon each unit are identicalthe following I description, which visoitthe mechanisms "of a single unit, will, apply to the otheif'units' ia [he blow-pape carrymg mechamsm. u Each unittrame 315has in itsupp'erhorilzontal member it-bearing for the trunnion-7 4O mountedon the innersidjeof a blow-pipe frame &1, the blowepip'e frame being on the outerside off's'uchhearing, and the-trunnion of which is shownfinl igi m.These cams be energized 'aiida circuit closed through the solenoid '25ofsuch iunitg'whereby such solenoid will be energized and the unitclutch operated to give the initlallmovement lower; flanges t 'locatedat and extending "on both sides from a point ad acent to the include. arun ,4? formed hyupper and;

"loading position, stndsolocated that when a unitis in loading positionthe-roller as of 'such'unit 'will' l e-contained within 'such Y run andbetween the flangesgthe; blow-pipe frame being .ihori'zIontal atsuchftime I 'ndf that as the unit moves forward from loading position inthe direction of the arrow Fig. 10 such roller will be gradually liftedand will move the blow-pipe frame around the bearing of the trunnion,lifting what will be hereinafter i the gather end of the frame. Locatedbeyond the exit end of the runs H is a curved. run 44 formed by a singletlange adapted in the furt'hcr-movement of the unit to be struck by theroller l2 thereof and to depress such roller, thus reversing thedirection of movement of the blow-pipe frame around its trunnionhearing. The end of the cam run M is so located that upon the escape ofthe roller 42 therefrom, the blow-pipe frame will be substantiallyvertical with the gather end down, and will remain in this positionuntil the unit carrier has made nearly a complete revolution around thecentral column when the roller 43 will by contacting with the dependingfinger 44 on the entering end of the bottom flange 44 be thrown upwardto guide such roller into the run 44 and to restore the blowfpipe frameto its original horizontal position.

The opposite end of the blow-pipe frame to that which has been. calledthe gather end has projecting from the rear side (that is to say, theside from which the unit moves in its travel) a suitable rotatableblow-pipe chuck 45, to which motion may be imparted through the gearing46 and the shaft 47 extending axially of the blow-pipe frame. The lowerend of this shaft has a pinion 4L8 thereon meshing with a double-facedbeveled gear ring 49 sleeved on the trunnion 4:0 and meshing with a gear50 mounted on the lower end of'a shaft 51 mounted in bearings in theunit frame and having on its upper end a pinion 52 driven through thegearings 53 by a pinion 54 meshing with a stationary gear 55 formed onthe enlarged head of the column, so that as the unit travels around suchcolumn the blow-pipe chuck will be rotated, while during the intervalsthat the unit is stationary no rotation of the blow-pipe chuck will takeplace.

The blow-pipechuck includes a bell 56 axially sliding in respect to suchchuck and adapted to be projected from the inner end of the same bymeans of one end of a yoke 57 pivoted in the blow-pipe frame and havingits other end connected by a rod 59 to one arm 60 of the operating lever60. The blow-pipe frame carries on its gather end pivoted levers 61, theinner ends of which project forwardly and rearwardly in respect to thedirection of movement of the frame, and each have mounted thereon tworollers 62 adapted to receive the lower end of a removable blow-pipe 63,whose outer end may have been inserted within the bell of the chuck. Therollers are normally held against the low-pipe to center the latternasgeoe by means of a spring 62 acting upon a slide (5-1: whose outerend is connected by toggles with the outer ends of the levers 61.

The slide 64 is moreover connected by the rod 66 with 'another arm 60 ofthe hand lever 60, the arrangement of the point of attachment of tlierods 59 and 66 to the arms 60 and 60 lbeing such that when the handlever is thrown in one direction the bell of the blow-pipe chuck isretracted within the chuck and the opposite pairs of rollers 62separate, while when such lever is moved in the opposite direction thebell of the chuck is projected on the blow-pipe and the rollers 62allowed to close upon the opposite end of the blow-pipe. The hand lever60 has a third arm 60 so located when the blow-pipe frame is horizontalthat as the hand lever is turned in the last-named direction, that is tosay, in the direction to engage a blow-pipe a pin 60, on another arm 60'of such lever will by contacting with the main switch 26 before referredto, close the latter on the contact 26.

Inasmuch as the main switch 27 is mounted on the unit frame and thestarting lever is mounted on the blow-pipe frame, the cooperativerelation before described be tween the two WlllSllbSlSi only While theunit carrier is in itasnormal horizontal position, and as the blow-pipeframe is swung from this position upon the first movement of the unitcarrier it follows that this operative connection will be soondestroyed, but not until the unit carrier has moved sufficiently topermit the automatic switch to move off the contacting stud locatedadjacent to the loading position, so that the further movement of theunit carrier will be under the control of such automatic switch.

The marverer.

The unit frame has rising from its upper end a head 70, at the upper endof which is pivoted at 70 the marverer carrying arm 71, projectingtoward the rear side of the unit carrier. The outer end of this arm hasthereon an arc-shaped marvering plate 72, which is so situated that itsouter surface will be adjacent to the plane of movement of a gather ofglass carried on the blow-pipe mounted in the blow-pipe frame when. thegather end of such frame is lifted in the manner before described. Whenso lifted the gather will be rolled along the surface of the marveringplate and marvered, the surface of the plate being properly shaped topermit this. The arm 71 is connected to the blow-pipe frame by means ofthe telescopic link 73, the upper member 73 of which is pivoted to sucharm at 74, and the lower member 73" of which is pivoted at its bottom tothe blow-pipe frame at 75. N01 mally the telescopic members are heldrigid with one another by means of a catch 7% pivoted in the lowermember 'andengaging lower and inner end ,of a crank arm 89? fast thelower end of the upper memberysuc'h on'the pivot shaft 8 1mounted in thebase Fof catch being normally heldin this position the leg andhavingfikeyed thereonjcrank by a spring 76 encircling its actuating rod:arm 89, connected through the compressible" 76, the lower end of whichterminates adja memberSQ to a, slide89 guided inthe rear n o th ,pWot 75. Thus, as the blow-pipe face'of the leg 80. This slide has in turn onframe swings up a slightmovementwill'be its rear face airoller 89"running in a pek I given to the IKIEHVBI'QI around its pivot/70",rip-hora]. oamion the fiangegSS, this cam be! but this movementwill notinterfere with ing so shaped that when the mold parts are th marvering'.As the gather-end ozt-thelowered as beforegdescrihed, they areopenblow-pipe frame completes ts' upward swingand that during a part ofthe'time that they a pro ection 77 onsuch'blow-pipeiframe will areraised, they areclosed. Partially sun rounding, the base of the centralcolumn and lease the latch 76 between the two members located atthe'loading positionis a water of the telescopic link, allowingsuchlink-to box, adapted tocontain water and in which collapse whereupon'the' marverer 72*wi1l the mold-halveswhen lowered, are 'sub-"Q swingdownwardly around'the ivotm and merged. Thus-t the, actuation ofi thernol cl be withdrawn from the descri ed position.q-parts,like,therotationofthe'blowpipeis. a This movement of the 'marverer-will fnotfunction, ofthe reyolution of unit strike the lower end'ot the ro'dTti Jandreonly remove it away from"themarveredglass- Tier around the centralcolumn; and avoid subsequent interfei' ence between p v A the two,butfwill also bring the imarverer i upon the out side of the unitframe-,"t hereby I 1 .-Mounte'd on the head with other units of themachine. Themevided with p i f g in r al m i i h ,Ce Jf liIlttI Q Lreducing the breadth-atti P rts carried umn and arr n s mm 141 i i bysuch frame and avoiding r rence dormedtheremj 1s ajhOHQW-Standard 90 PMverer will swing downwardly-through La rows therearound, the number ofs'aidfprortslimited distance whef'e' it will be arrested being equal tothe number of the unit can by a suitable stop on the unitcarrie'r. {Theriers. The standard is surrounded opposite blow-pipe frameaftercompleting .the inar each row by acollarQO" liavingl'an annular:

vering is, as before stated, lowerejdto a ver'-' gr ve? n its int mm iitical position in 'w hieh tne" gather end -1s Wlth the airtankithroughthe 'corresp on' down. frame inconnectionwith ,thearrestation of airp1pe91wh1ch s connectem'throngh an the downward swing offthe marvererreairyalve 92 mount d on theta-responding? sults, in an extension'ofthetelescopicfliiile earner, and through th fiex bl c nect and arestoration of the parts thereof to 93, to one member of a rotating airjoint 94;, their normal position in which theywi'll be located a iallyin respect tp thepilvotal.

This" movement,of"the"'blow-pi Hing ports,'a-nd from each collarextends: an.

looked from collapse by the latch7filf Upon mounting of t ,w e pondmgblow-pipe the subsequent upward, movementljof the frame. From theopposite member of'this gather end of the blow=pipe the marver'erconnectiomwhich is fast upon th 'blowi e;;j1

will be lifted through these nownon-col frame, an-vai-r'pie 9% leads tothe blow-pipe lapsing members and be restored to its normal position, HH r I [The f cross-head 95f engaged by a lever 96 p voted Each unitcarrier has depeiiding'-there-- endguided by a cam.- 97 mounted upon.the; from a leg 80 in which is mounted the hori enlargedheadofthecentral colummwheneby (31 nch.before re erred; to. The airvalvel-tlz i has a rotating/stem 95, on which is keyedfa;

1'10 on the unit carrier and having its opposite."

zontal pivot, 81 of a mold t carrier 82min the rotationof thevuni'taround theieentral Mounted in the mold carrier on'a pivot 83 standardthis yalve will be actuated [at at right angles to the pivot 81 are thetwo propertimesand inv-proper amounts; half molds 84. Each half mold isconnected I With the above described embodiment'of.

by alink 85 to a block 85 'slidingon rods 87, the invention andwith thepartsall in their"-'.

carried the mold carrier.' The mold carv v V rier 18 connected to thelowenendofalink -carrier. at rest and occupying the loading normalposition, that is to. ,say, with a unit.

88 which is pivoted to thejforw'ard endof a position and the other unitcarriers,;spac ed t lever 88?, pivotedin thedegBO and havingaround'the'centralstandard, the unit "carrier on, its rear end aroller.8'8"' running"upon-' in loading posltlon-willhave the w pipe thelower edge of a cam flange 88"surround thereof horizontal. 5,,

ing the central column; This 'cam" isso Aworkman, now insertsa.blow-pipe have shaped that at the proper'time the roller-88? vingagatherot glass thereonin the. blow-f will be depressed to throw theimoldcarrier pipe'frame-andfastens itthere-by thepnope i- I upon, itspivotandto 'thus'rais'e the mold" movement. of the hand. lever to project thehalves. The blocks"85'= are on opposite ends bell, ofthe chuck upon, oneend offthepipe of a m s-stud 89 ,v hich' is en'gagedbythe andtocausetthe rollers to clamp thebl pipe near-the opposite end thereof.This movement will, as before stated. result in amomentary closing ofthe main switch 27" upon such carrier and in'closing the clutchconnecting such carrier with the revolving drum, so that the carrierwill. move f0rward. In this movement the blow-pipe frame. will be movedabout its horizontal trunnion to raise the gather end thereof which willresult in a rolling of the gather along the surface of the marverer, theblowpipe itself having been put in rotation by the movement of the.frame. After this movement of the -blow-pipe frame has carried thegather of glass up to or above the upward end of the marverer, thetelescopic members of the link 73 will be released and the marverer willswing downwardly away from the marvered blank. As the marverer leavesthe blank a puff or puffs of air will be admitted through the air valveand the continued movement of the blow-pipe frame, and so position itthat the inarvered blank will be upon the lower end of the blow-pipecarried thereby. During this downward swing of the marvered blank theair valve is open as often as may be required to give I small puffs ofair and as the blow-pipe assumes its vertical position the unit carrierreaches in its movement around the central column what has beendesignated as the elongation position, where lLWlll be arrested by theopening of the automatic switch'29 by the contact stud 30 adjacent tothat position. This stops rotation of the blow-pipe. The parts willremain in this position to permit elongation of the blank dc ending fromthe blow-pipe until a circuit through the solenoid is again made. Thiscan be done either by hand or automatically as by the gather controlledelement before referred to, and when it occurs,

whatever may be the cause of it, the unit carrier again resumes itsmovement. This movement of the unit carrier brings it in such positionthat the mold lifting and mold closing cams come into operation to liftand close the mold parts in the order named, they having been previouslylowered and opened, and to cause the air valve to be opened by the aircam and the blowing of the glass to take place while in the mold. Afterthis blowing has been accomplished the unit carrier which is still intravel, by such travel causes the mold parts to open, and is thenstopped in the position which has been designated the reserve or stoppedposition, by

' the automatic switch of such carrier thereof coming in contactwith thecontact stud for that position. The blow-pipe with the blown article.can now be removed fromthe frame by proper manipulation of the handlever. The unit carrier remains inthis reserve position with theblow-pipe frame" thereon vertical until the preceding unit carrier isgather.

moved from the loading position. The closing of the main switch on suchpreceding carrier, through the wire 30' connecting the studs for theloading and reserve position, also energizes the clutch solenoid of theunitcarrier which we are considering and which is in reserve position,thereby causing such unit carrier to move forward to loading position.In this movement the mold, by the proper shaping of the mold loweringcam 75 will be dipped in the water tank to cool,

while theblow-pipeframe will be swung by the blow-pipe swinging cam to ahorizontal position toreceive another iron with a new gather as beforedescribed.

Reference has before been made to the fact that the starting of a unitframe'from elongation position may be made automatic and dependent uponthe action of the The mechanism shown for accomplishing this comprisesthe two thermostatic contact points 3+1: so positioned as to be adjacentto thepath of the descending gather. As before stated these contactpoints control the circuit of the relay coil 32 and the heat of thegather when the same by its elongation comes into proximity therewith,causes the points to make con tact to energize the clutch magnet.lnasmuch as it is desirable that these points be close to the lowerlimit of the elongation and close to the line of elongation it isnecessary that they be removed from this position be fore the mold.closes. This is accomplished by mounting the contact points upon theouter ends of-a crank arm 101 keyed to the lower end of a vertical shaft101 carried in a bracket 102 projecting outwardlyfrom each unit carrier,the upper end of the shaft having thereon a finger 101*, which as the105 blow-pipe frame swings down to vertical position is struck by a dog101 pivoted on the latter to throw the thermostatic ele- .ments carriedon the end of the crank arm of the dog may be accomplished by the bellcrank 10% pivoted on the'bracket and 0011- nected by the link 105 with asecond bell crank 106 pivoted on the unit carrier, which last-named bellcrank may be actuated on the movement of a carrier from elongationposition. by a stud 108 fast on the central column. The lag in thethermostatic elements is sutlicientto maintain the clutch solenoidcircuit closed untilthe unit frame has been movedsuiiiciently from suchelongation position to permit the closing of the automatic switch. I

Having thus described my invention, what I claim and desire to secure byLetters Patent is I 1. In a glass-Working machine, the combination witha "series of independent units, of means for driving such units in aclosed path and with a. definite velocity Whenin motion, means forindependently arresting each of such units, and means under the controlof the operator for again causing.

each unit to resume its motion.

2. In a glass-Working machine, the combination of a plurality of units,means for moving such units in a closed path, and means for arrestingeach of said units at each of a plurality f definite positions in suchpath, means under the control of the operator for causing each unit tomove from one of such positions, and automatic means energized therebyfor causing the unit at the following position to move therefrom.

3. In a glassnvorking machine, the-combination of a plurality ofindependent units moving in a closed path, means for independentlyarresting each of said units to permit elon ation of a gather of glasscontained therloy, and means actuated by the elongation of such gatherto again put the unit in movement.

ORIN A. HANFORD.

Witnesses:

GEORGE H. GILMAN, J. W'. DORSEY.

copies of this patent may be obtained tor five cents each, by addressingthe Commissioner of Patents,

7 Washington, I). G.

